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| Main Authors: | , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2006
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| Online Access: | https://doi.org/10.1594/PANGAEA.728134 |
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| _version_ | 1867169499621359616 |
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| author | Gutt, Julian Fricke, Anna Teixidó, Núria Potthoff, Michael Arntz, Wolf E |
| author_facet | Gutt, Julian Fricke, Anna Teixidó, Núria Potthoff, Michael Arntz, Wolf E |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Mega-epibenthic diversity was analysed using a seabed photography at four stations off Bouvet Island and one station at the Spiess Seamount in the South Atlantic. Surprisingly, the intermediate-scale diversity within the area of investigation was not lower compared to that on the Patagonian shelf and only moderately lower than that on the Antarctic continental shelf. This result is incompatible with Mac Arthur and Wilson's Island Biogeography Theory describing species richness as a function of immigration of new species into an area and its extension. The relatively high species number and the very small extension of the Bouvet shelf compared to the much larger continental shelves of the other two areas can be explained by long-range dispersal of marine benthic animals in the Antarctic Circumpolar Current and high habitat heterogeneity. The observed uncoupling of intermediate-scale from large-scale background species diversity on the Antarctic shelf raises the question whether in these benthic systems an upper capacity limit for diversity exists. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_728134 |
| institution | PANGAEA |
| language | en |
| publishDate | 2006 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Mega-epibenthos at Bouvet Island (South Atlantic) Gutt, Julian Fricke, Anna Teixidó, Núria Potthoff, Michael Arntz, Wolf E ANT-XXI/2; Archive of Underwater Imaging; AUI; EASIZ; Ecology of the Antarctic Sea Ice Zone; FTS; Photo sledge; Polarstern; PS65/022-1; PS65/024-1; PS65/031-1; PS65/032-1; PS65/343-1; PS65 BENDEX; South Atlantic Ocean Mega-epibenthic diversity was analysed using a seabed photography at four stations off Bouvet Island and one station at the Spiess Seamount in the South Atlantic. Surprisingly, the intermediate-scale diversity within the area of investigation was not lower compared to that on the Patagonian shelf and only moderately lower than that on the Antarctic continental shelf. This result is incompatible with Mac Arthur and Wilson's Island Biogeography Theory describing species richness as a function of immigration of new species into an area and its extension. The relatively high species number and the very small extension of the Bouvet shelf compared to the much larger continental shelves of the other two areas can be explained by long-range dispersal of marine benthic animals in the Antarctic Circumpolar Current and high habitat heterogeneity. The observed uncoupling of intermediate-scale from large-scale background species diversity on the Antarctic shelf raises the question whether in these benthic systems an upper capacity limit for diversity exists. |
| title | Mega-epibenthos at Bouvet Island (South Atlantic) |
| topic | ANT-XXI/2; Archive of Underwater Imaging; AUI; EASIZ; Ecology of the Antarctic Sea Ice Zone; FTS; Photo sledge; Polarstern; PS65/022-1; PS65/024-1; PS65/031-1; PS65/032-1; PS65/343-1; PS65 BENDEX; South Atlantic Ocean |
| url | https://doi.org/10.1594/PANGAEA.728134 |